Weatherstripped windows



Dec. 29, 1959 c. K. slT'rERLY ETAI- WEATHERSTRIPPED wINnows Filed Dec. 17, 195e @wf f @L7/;

United N States Patent() 2,913,710 wEArHERsrRIPPEo WINDOWS Charles K. Sitterly and Edwin O. Stecher, Dubuque, Itwla, assignors to Caradco Incorporated, a corporation o owa ApplicationDecember 17, 1956, Serial No. 628,724

2 Claims. (Cl. 20-69) This invention relates to a window construction, and more particularly to a weatherstripped window construction.

It is the general object of this invention to provide a new and improved weatherstripped construction for windows and similar articles.

An object of this invention` is to provide a new and improved weatherstripped window construction utilizing at an edge of the window which is closed with a sharp impact an elongated, flexible weatherstrip member having a sharply defined angle extending the length thereof, wherein flattening out of the angle of the weatherstrip member under full impact as the window is closed is prevented, thus increasing the flexure life of the weatherstrip.

Another object of this invention is to provide such a weatherstripped window construction, wherein at the closing edge of the window there are mating generally Hat sealing surfaces formed on the adjoining sash and frame members with such a bent angle type weatherstrip having a side edge anchored in a recess formed in one of the sealing surfaces and a sealing edge adapted to form a seal against the adjoining sealing surface when the window is closed, `and wherein a relatively shallow relief groove is formed in the anchoring surface in alignment with the" sharply defined angle of the weatherstrip 'so that when the weatherstripped edge of the window is closed the relief groove receives and protects the angle of the weatherstrip member, thus preventing complete attening of the angle and increasing the ilexure life of the weatherstrip.

Other objects and advantages will become apparent in the following detailed description taken in connection with the accompanying drawing, in which:

Fig. l is a perspective view of an awning-type window utilizing a preferred embodiment of the invention and showing the window in an open position;

Fig. 2 is an enlarged fragmentary vertical sectional view taken generally along line 2--2 of Fig. 1 with the window closed;

Fig. 3 is an enlarged fragmentary vertical sectional view taken generally along line 3-3 of Fig. 1 with the window closed;

Fig. 4 is an enlarged fragmentary horizontal sectional view taken generally along line 4-4 of Fig. 1 with the window closed; and

Fig. 5 is a fragmentary vertical sectional view of the window of Fig. 3 wherein due to misalignment or faulty installation there is no gap provided between the sash and the frame, thus, showing to more advantage the protection provided for the angle in the weatherstrip by the relief groove.

While the invention as herein described is a preferred embodiment, it is not intended to limit the invention to/ the specific form and arrangement shown, it being contemplated that various changes may be made by those skilled in the art without departing from the spirit and scope of the appended claims.

The invention is shown and described herein as applied to an awning-type window which, as shown in Fig. 1, includes a frame 10 and a sash 11 having a pane of glass l2 mounted therein. The sash 11 is pivotably and slidably mounted in the frame 10 for opening and closing movements. It is noted that, although an awning-type window is shown and described, this weatherstrip construction may be utilized equally well with double-hung and other-type window constructions. In the awnngtype window shown, the mounting of the sash 11 in the frame 10 is not a feature of this invention and will not be described in detail. A pair of pivotally mounted arms 13 are connected between the sash 11 and the frame 10 and the upper edge of the sash 11 is adapted to slide slightlydownwardly as it is pivoted outwardly.

The frame l0 includes an upper frame member 14, a lower sill member 15, and sidejambs 16 and 17. The sash l1 includes an upper rail 13, a lower rail 19, and side rails 20 and 21 secured together by any of the wellknown methods in the art. The upper frame member 14 and the upper sash rail 18 are provided with mating or adjoining generally flat sealing or closing surfaces 22 and 23, respectively. The side jambs 16 and 17 and the side sash rails 20 and 2l are provided with adjoining or mating generally fiat sealing surfaces 24 and 25, respectively. As best shown in Fig. 3, the lower sill member 15 and the lower sash rail 19 are provided with adjoining or mating generally fiat sealing or closing surfaces 26 and 27, respectively.

When the window is closed, the lower rail 19 of the sash 11 abuts against a shoulder 28 formed on the lower sill member 15 and the side rails 20 and 21 abut against vertical members 29 secured to the side jambs 16 and 17 of the frame 10 by tongue and groove arrangements, as shown at 30. It is noted that narrow gaps are defined between the sealing surfaces of the sash 11 and the sealing surfaces of the frame 10. These gaps provide necessary clearance for opening and closing the window particularly, because often either the frame or the sash may be forced slightly out of its original alignment while being installed. Fig. 5 illustrates the window wherein there is substantially no gap provided between the sash member 19 and the sill member 15 as the result of misalignment or faulty installation.

With such gaps, it is necessary to provide means for sealing them against outside weather Condit-ions. For this reason, this invention is directed toward a new and improved means of providing such a seal against the weather. It has been found that elongated weatherstrip members made of a springy metallic material are best adapted for this purpose and particularly such Weatherstrip members which have a sharply defined angle portion formed between an anchored edge portion and a sealing edge portion. One problem with the use of such weatherstrip members is that when a window is continually closed with a sharp impact there is a tendency for the angled portion of the weatherstrip member to become distorted or flattened out. After a number of such flattening impacts, the weatherstrip members tend to lose their flexibility and consequently their effectiveness as a weather seal.

Referring now to the drawings and particularly to Figs. 2, 3 and 4, an elongated flexible or resilient weatherstrip member 34 is provided for each edge of the window. Each member 34 has a side edge portion 35 which is doubled back upon itself to form a type of anchoring means and a `sealing edge portion 36 extending generally normally to the edge 35 adapted to be anchored. A sharply defined angle 37 extending longitudinally of the member 34 is formed intermediate the sealing edge 36 and the doubled back edge portion 35. It is this sharply defined angle 37 which tends to be flattened out under the sharpimpact as the window is continually opened and closed.

As shown in the drawings, a relatively deep longitudinally extending recess 40 is formed in the sealing surfaces of the uper sash rail 18, the lower sash rail 19, and the side jambs 16 and 17 of the frame 10. These recesses 40 are adapted to tightly receive the doubled back edge portions 35 of the weatherstrip members 34 to securely anchor them in said sealing surfaces.

IIt is noted that the sealing edges 36 of the weatherstrip members 34, when securely anchored, extend somewhat 4diagonally from the anchorededge portions 35k toward the sealing surface on the adjacent member. When the weatherstrip members 34 are anchored in one of the sealing surfaces, the sharply delined angle 37 is directed toward the sealing surface in which it is anchored.

IIn order to prevent attening out of the sharply defined angle 37 of the weatherstrip member 34, relief grooves 42 are provided in the sealing surfaces in which the weatherstrip members 34 are anchored with such grooves 42 laterally intersecting the anchoring recesses 40. 'It is noted that these grooves 42 may either be rectangular in section, as in Figs. 3 and 4, o-r triangular, as in Fig. 2, as long as they are aligned with the angled portions 37 of the weatherstrip members 34. When the window is closed with a sharp impact, these relief grooves 42 act to receive and protect the sharply defined angles 37 of the weatherstrip members 34 to prevent distortion and attening thereof and thus to increase the ilexure life of the weatherstrip members 34.

lIf desired, the sealing portions 36 of the Weatherstrip members 34 may be provided with a slight hook 41 at the free edge thereof to prevent the weatherstrip members 34 Afrom becoming jammed against the opposite sealing surface, as in Figs. 3 and 4. When such hooked edges 41 are provided, longitudinally extending depressions 44 may be formed in the anchoring surfaces of the frame and sash members so as to receive the hooked edges 41 when the Window is tightly closed.

`In the window as shown in Fig. 5, wherein the gap between the sash member 19 and the sill member 15 has been substantially eliminated due to misalignment or faulty installation, the protective function of the relief groove is shown in better advantage. The angle 37 of the weatherstrip member 34 is shown received in the relief groove 42to prevent its liattening under impact.

We claim:

`1. A window construction, comprising: a window frame; a window sash including a peripheral rail, the sash and frame being relatively movable toward and from closed position With the sash and frame having members providing cooperating surfaces movable toward contacting positions when moved to said closed position; and an elongated springy weather seal strip between said surfaces when the sash and frame are in closed position, the strip having an anchored portion attached to one of said members, a freely oatingsealing portion extending away from said one member into sealing engagement with the other of the said members when in said closed position, said anchored portion and sealing portion being connected by an intermediate portion having a sharply defined bend positioned adjacent said one member and located adjacent said anchored portion, and said one member having a relief recess underlying said bend to receive the bend when necessary to prevent permanent attening of said bend, the relief recess extending into the portion of said one member receiving the anchored portion to receive the bend and the section of seal strip between the bend and the anchored portion in a reverse curve to prevent permanent distortion set of said bend when the sashand frame are moved to tightly closed positon.

2. The window construction of claim 1 wherein said anchored portion is located in a recess and said relief recess intersects the anchored portion recess.

References Cited in the tile of this patent UNITED .STATES PATENTS FOREIGN PATENTS Switzerland Feb. 1, 1934 Switzerland 1 July 16, 1940 

